Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e487e65896baade…

MALICIOUS

PDF

74.5 KB Created: 2021-03-16 01:19:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c8bc91c3ac5177b032791ca5e056b9d SHA-1: 3a0070699c438705599e84e2c098268c76d4334d SHA-256: 5e487e65896baade5fa81514d88182f5f9e2c16cbd9873b122961ab86a528978
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing content. The document body, though heavily obfuscated, suggests a lure related to educational content to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://kuzutuzo.ru/wix?keyword=section+10.1+volcanoes+and+plate+tectonics+answers
    • https://cdn.sqhk.co/linidivez/jehhjdN/dhoom_2_hrithik_roshan_ka_full_movie.pdf
    • https://cdn-cms.f-static.net/uploads/4455673/normal_602bee8513a0b.pdf
    • https://cdn.sqhk.co/kupuruvew/asifYFR/toxupivibagukisigavusile.pdf
    • https://cdn.sqhk.co/xafeperale/ediibL7/goat_simulator_waste_of_space_trophy_locations.pdf
    • https://cdn.sqhk.co/sukonazukuv/ggPheha/fight_klub_multiplayer_pvp_mmo.pdf
    • https://cdn.sqhk.co/zibusisujij/jhhaaXN/cosmic_kids_yoga_pokemon.pdf
    • http://xapesapofaru.iblogger.org/mcculloch_3200_chainsaw_primer_bulb_replacement.pdf
    • https://cdn.sqhk.co/wujukipako/FysgiRH/average_height_for_women_california.pdf
    • https://cdn.sqhk.co/gufadiviw/AhhjhEt/80540714876.pdf
    • https://cdn.sqhk.co/pelotuwew/hgJgfmg/kugunalepikakobetim.pdf
    • https://static.s123-cdn-static.com/uploads/4368788/normal_5ff6d39d44226.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/392c00f1-0767-49af-a14a-c70d89596022/what_is_the_job_description_of_customer_service_representative.pdf
    • http://wewapozolebupo.epizy.com/70272417620.pdf
    • https://uploads.strikinglycdn.com/files/9341a893-7501-417c-abd0-88b5ddfbbf76/how_old_is_the_ipod_nano.pdf
    • https://s3.amazonaws.com/nuruvapozixix/matematica_financiera_capitalizacion.pdf
    • http://lexaxixamu.rf.gd/repifitagiranelodat.pdf
    • http://maxonelotod.epizy.com/automatismos_industriales_cableados.pdf
    • https://s3.amazonaws.com/tixedujegibex/bazusupiladefelaj.pdf
    • https://s3.amazonaws.com/xapota/73834290423.pdf
    • https://uploads.strikinglycdn.com/files/9347398c-8dad-45ec-a6ce-db59752c1b71/supercharging_quantum_touch_advanced_techniques.pdf
    • https://uploads.strikinglycdn.com/files/85213b1c-d1fc-4d93-af57-5aeb22fd430e/to_kill_a_mockingbird_notes_chapter_20.pdf
    • https://s3.amazonaws.com/tigovatolis/5576218064.pdf
    • http://lokutoge.rf.gd/react_bootstrap_table_dataformat_onclick.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e59d.bin
73f008bb625d7cad91ba881918b479b8dd6594a466ada4faccffe2579e63e734		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE59D 5548 bytes
font_01_sfnt_off0000f8a5.bin
3cc605fcb99b157699a2891596afbfeea1ddec52e2c35798b62d8a731ddf7e9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A5 10316 bytes

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